Given numbers are 638,247,992,780,416

The least common multiple of numbers can be find using the prime factorization method or LCM formula.

The LCM of 638,247,992,780,416 is 1172439840.

Find LCM of 638,247,992,780,416 with Prime Factorization

Multiply the prime numbers at the bottom and the left side.

2 x 2 x 2 x 2 x 2 x 13 x 319 x 19 x 31 x 15 x 1 = 1172439840

Therefore, the lowest common multiple of 638,247,992,780,416 is 1172439840.

LCM formula is LCM(a1, a2, an) = (a1 x a2 x an)/{GCF(a1 x a2 x an) x common factors}

Firstly, we have to find the product of all the numbers.

638 x 247 x 992 x 780 x 416 = 50724437237760

Then, let us find the GCF of these five numbers. To do so, we have to list down the factors for each number and choose the highest factor that is in all of the lists.

638 : 1, 2, 11, 22, 29, 58, 319, 638

247 : 1, 13, 19, 247

992 : 1, 2, 4, 8, 16, 31, 32, 62, 124, 248, 496, 992

780 : 1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780

416 : 1, 2, 4, 8, 13, 16, 26, 32, 52, 104, 208, 416

1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 638,247,992,780,416, is 1.

Now, the common factors can be found like this.

638:2x 11x 29

247:13x 19

992:2x 2x 2x 2x 2x 31

780:2x 2x 3x 5x 13

416:2x 2x 2x 2x 2x 13

From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.

2x 2x 2x 2x 2x 2x 2x 2x 13x 13 = 43264

Therefore, the value for common factors is 43264.

Now that we have all the elements of the formula, we can plug them in to calculate the LCM.

LCM(a1, a2, an) = (a1 x a2 x an)/{GCF(a1 x a2 x an) x common factors}

LCM = 50724437237760/(1x43264)

LCM = 50724437237760/43264

LCM = 1172439840

Thus, we can understand that the LCM of 638,247,992,780,416 is 1172439840.

Here are some samples of LCM of two or more Numbers calculations.

• LCM of 408, 571, 913, 638, 974
• LCM of 338, 330, 601, 208, 715
• LCM of 251, 844, 142, 219, 500
• LCM of 508, 264, 172, 940, 919
• LCM of 870, 832, 606, 255, 267

1. What is the LCM of 638, 247, 992, 780, 416?

Answer: LCM of 638, 247, 992, 780, 416 is 1172439840.

2. How to calculate the LCM of 638, 247, 992, 780, 416?

The LCM can be found using two methods. You can either use the LCM formula or the prime factorization method to calculate the LCM of 638, 247, 992, 780, 416.

3. What is the LCM formula?

The LCM formula is LCM(a1, a2, an) = (a1 x a2 x an)/{GCF(a1 x a2 x an) x common factors}.